In terms of preserving food, the intelligent Chinese had already invented various ways in the remote ancient; curing, drying, pickling, smoking, and freezing are the most frequently used, which can not only retain the food but also created some entirely different tastes differing from the fresh. Up to this day, though modern hi-technology has been applied in maintaining the fresh flavor of the food material, the special flavors of Chinese food that recreated by the time by means of traditional ways of food-keeping are still obsessing for people as a indispensable part because they are both the tastes of one’s hometown and some kind of emotions of the traditional Chinese culture.